i dont know, i really doubt it isnt related, for a couple of reasons
1. i really feel different, and it seems like it directly coincides with my using that lower quality weed, i dont see why i would all of a sudden get depressed.
2. i cant sleep, no matter how much weed i smoke
3. when i smoke good weed i barely feel it, and what i do feel feels not as good, sort of like the way if feels during withdrawel. personally i find that im very susceptible to withdrawal, if i have a drink or take some adderall one night ill feel like crap for a couple of days after.
4. the way i felt when i smoked it, i felt a very distinct headrush, usually when i smoke weed i feel comfortable, relaxed, a bit quirky but this time when i did it i kept forgetting where i left things a moment earlier, which usually doesnt happen to me, and its not like i smoked a lot of it.
5. ive had this exact same experience before with the lower quality stuff, which is why i usually only smoke higher quality stuff. i can usually tell by the smell of the weed whether its good or not. i remember one time i stayed over at a friends house and smoked some and the next day i was so disoriented that i got lost in ny city, which isnt something that usually happens to me (especially sense that time i was only 4 blocks away from where i needed to go).
6. the rush i got from this weed allowed me to drive a car with ease, usually when im stoned im to anxious too drive, or if i do i find it difficult and i have to really pay attention.
i mean maybe your right, maybe im just being paranoid , but i dont know, music doesnt sound good anymore, im kind of twitchy , to me it seems kind of far fetched that i could start to be depressed and anxious after feeling so good for so long just by chance on the day that i choose to smoke this lower quality weed for the first time in years. whatever it is i guess it will blow over soon anyway and then i can be my merry self again.
i also have family members who smoke only the low quality stuff and they are very screwed up, i cant help thinking that there is a link. the good stuff and the worse stuff make me feel VERY different. I realize that when it comes down to it all of my evidence is subjective, even if i have noticed this problem for years, and that isnt conclusive evidence, but im pretty certain.